<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>
        /* 选择器{属性:值;} */
        /* 类选择器 */

        .t1{
            color: rgb(123,52,12);
        }

        /* 标签名选择器 */
        li{
            color: rgba(0,0,0,0.5);
        }
    </style>
</head>
<body>
<ul>
    <li class="t1">java</li>
    <li>java</li>
    <li>java</li>
    <li>java</li>
    <li>java</li>
    
    
    
</ul>

</body>
</html>